Gmail export

If you keep your database in gmail or don’t really have a database other than customers that you talk to through email, you can export your Gmail contacts*. To do this, follow these steps:

  1. Sign in to Gmail.
  2. At the top left, click Mail > Contacts.
  3. Click More > Export... 
  4. Choose whether to export all contacts or only one group.
  5. Select Google CSV format
  6. Click Export.
  7. You may now need to choose where to save the file, or it may automatically go to your downloads folder.
  8. Head here and upload the database which should be called something ending with .csv

*you should have permission from these guys to add them to a marketing database.